import java.util.concurrent.locks.ReentrantLock;

/**
 * @Author: XXHH
 * @CreateTime: 2025-08-21
 */
public class Demo50 {
    private static int count = 0;
    public static void main(String[] args) throws InterruptedException {
//        ReentrantLock locker = new ReentrantLock(true);
        ReentrantLock locker = new ReentrantLock(true);
        Thread t1 = new Thread(()->{
            for (int i = 0; i < 50000; i++) {
                locker.lock();
                try {
                    count++;
                }finally {
                    locker.unlock();
                }
            }
        });
        Thread t2 = new Thread(()->{
            for(int i = 0;i<50000;i++){
                locker.lock();
                count++;
                locker.unlock();
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(count);
    }
}
